Keystones — Cornerstone
Five GCSE retrieval questions · 10 April 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄8 + 1⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 3x + 13 = 49
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 12cm
Answer: 12.65cm -
4. Ratio Sharing in a ratio
Share 15 in the ratio 2:1
Answer: 10 and 5 -
5. Statistics Mean
Find the mean of: 5, 12, 14
Answer: 10.333333333333